Schneider Electric NA361000 I-Line Circuit Breaker

Schneider Electric's Square D NA361000 I-Line molded‑case circuit breaker is a 1000‑amp, 3‑pole device designed for 600 V systems and I‑Line panelboards, delivering robust protection for large three‑phase circuits in industrial and commercial electrical distributions. As a Type NA, this 3‑pole unit uses an I‑Line plug‑in mounting configuration and is intended for indoor use, making it compatible with Square D I‑Line panelboards where high current, compact form factor, and quick replacement are priorities. It provides a high interrupting capacity of 50 kA at 480 V, enabling it to safely interrupt fault currents common in heavy‑duty feeders and main disconnect applications. Because it is part of Square D's I‑Line family, the NA361000 is frequently used as a main breaker or feeder protection in indoor panelboards where large three‑phase loads require reliable, high‑capacity overload and short‑circuit protection. With a molded‑case design and plug‑in I‑Line mounting, it enables quick field replacement in busy facilities, while its 3‑pole arrangement provides balanced protection across all three phases.